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12383380 = 225619169
BaseRepresentation
bin101111001111…
…010010010100
3212022010210201
4233033102110
511132232010
61121230244
7210154102
oct57172224
925263721
1012383380
116a988a9
124192384
132747659
141904c72
15114923a
hexbcf494

12383380 has 12 divisors (see below), whose sum is σ = 26005140. Its totient is φ = 4953344.

The previous prime is 12383369. The next prime is 12383387. The reversal of 12383380 is 8338321.

It can be written as a sum of positive squares in 2 ways, for example, as 4743684 + 7639696 = 2178^2 + 2764^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12383387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309565 + ... + 309604.

It is an arithmetic number, because the mean of its divisors is an integer number (2167095).

Almost surely, 212383380 is an apocalyptic number.

12383380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12383380 is an abundant number, since it is smaller than the sum of its proper divisors (13621760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12383380 is a wasteful number, since it uses less digits than its factorization.

12383380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619178 (or 619176 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 12383380 is about 3519.0026996295. The cubic root of 12383380 is about 231.3554493515.

The spelling of 12383380 in words is "twelve million, three hundred eighty-three thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 619169 1238338 2476676 3095845 6191690 12383380